isMutable x
If x is a hash table, list, dictionary, or database, then it is mutable if its contents can be destructively altered.
If x is a symbol, then it's mutable if a value can be assigned to it; i.e., if it is not protected.
If x is anything else, isMutable x will return false.
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This function may also be called using the synonym mutable.
The object isMutable is a compiled function.
The source of this document is in /build/reproducible-path/macaulay2-1.25.06+ds/M2/Macaulay2/packages/Macaulay2Doc/ov_hashtables.m2:412:0.